Check again,

turn the diode around again, try to swap the 2 midi-lines and finally,
replace the 6n138. Also check if the line from the 6n138 is connected on
the right pin in the PIC. I hope you are also using a 20Mhz quart. (
not a slower one i mean).
Send us some good pictures, maybe we can reverse engineering it. :)

good luck
Thomas firestARTer :-)

beowulfe007 schrieb:

>How frustrating. Every part of the midi circuit checks out. I have continuity
in all the right
>places. I replaced the 6N138 and I tried a different midi connector as well.
The thing that
>really makes me think midi is the issue is that when I set the unit to midi
learn mode it
>perpetually waits. I can send one note blasts to the gameboy with the
plus/minus buttons or
>by changing to midi full or keyboard modes, so I know the rest of the circuit
is working. I
>keep thinking it must be something stupid. Pix up soon.
>
>Thanks for being an active community. nitro2k01 - your stuff on the LSDJ wiki
was very
>helpful, btw.
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
>
>
>
>
>